Job Description
Card Payment Direction
This position focuses on developing and maintaining card payment systems, ensuring high performance, security, and reliability in financial transactions.
Key Responsibilities
- Core Business Development: Responsible for Golang backend development of the company's card payment/issuing systems, including but not limited to card issuance, card accounts, authorization, clearing & settlement, transaction processing, billing, and benefits modules.
- Card Transaction Chain Construction: Participate in the design and development of the entire card transaction chain, handling core processes such as authorization, reversal, capture, refund, and reconciliation.
- Architecture Design and Optimization: Engage in system architecture design, legacy system migration, continuous iteration, and performance tuning to ensure high availability, consistency, and stability of financial systems.
- Technical Problem Solving: Address technical challenges and bottlenecks in system operation, improve system throughput and response speed, and ensure fund security and data accuracy under high concurrency.
- Quality Assurance: Produce standardized technical documentation, maintain strict code quality control, conduct code reviews, and write unit/integration test cases.
Job Requirements
Basic Qualifications
- Bachelor's degree or higher in Computer Science or related field, with 3+ years of Golang/Java development experience.
- Experience in card issuing systems, card payment systems, or card transaction processing (strongly preferred).
- Understanding of crypto fundamentals; prior experience in crypto transactions/payments is a plus.
Technical Skills
- Fundamentals: Proficient in Golang/Java syntax, concurrent programming, Linux operations, data structures, and familiar with k8s and computer networks.
- Storage & Middleware: Skilled in MySQL with SQL performance tuning; experienced with Redis caching solutions (cache breakdown, penetration, avalanche); proficient in Kafka for system decoupling and async processing.
- Distributed Systems: Familiar with microservices architecture, gRPC, Protobuf, and microservices governance (service discovery, circuit breaking, rate limiting, distributed tracing).
- Cloud-Native Ecosystem: Knowledgeable in Docker, Kubernetes, and CI/CD pipelines.
- AI Integration: Ability to use AI tools like Claude Code/Codex to enhance workflow efficiency and create value-driven processes.
Preferred Qualifications
- Experience in Crypto Card/payment application risk control.
- Background in licensed card issuers, acquirers, third-party payments, or Card Processor systems.
- Familiarity with ISO 8583/ISO 20022 messaging or card network/issuer partner interfaces.
- Experience in crypto deposits/withdrawals, Crypto Cards, or fiat on/off-ramp services.
- Knowledge of PCI-DSS compliance/security standards.
- Involvement in building payment systems from scratch or core system migrations.
Benefits
- Performance bonuses
- Health check-ups
- Commercial insurance
- Company anniversary gifts
- Marriage & childbirth allowances
